The preservation of health is a duty. Few seem conscious that there is such a thing as physical morality.

The freest form of government is only the least objectionable form. The rule of the many by the few we call tyranny: the rule of the few by the many is tyranny also; only of a less intense kind.

No physiologist who calmly considers the question in connection with the general truths of his science, can long resist the conviction that different parts of the cerebrum subserve different kinds of mental action. Localization of function is the law of all organization whatever: separateness of duty is universally accompanied with separateness of structure: and it would be marvellous were an exception to exist in the cerebral hemispheres.

During human progress, every science is evolved out of its corresponding art.

Whatever fosters militarism makes for barbarism; whatever fosters peace makes for civilization.

Volumes might be written upon the impiety of the pious.

Our lives are universally shortened by our ignorance.